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2017-02-01Merge remote-tracking branch 'airlied/drm-next' into drm-intel-next-queuedDaniel Vetter
Chris Wilson wants the new fence tracepoint added in commit 8c96c678011eeb1676da18f203e90dea7e0d69d2 Author: Chris Wilson <chris@chris-wilson.co.uk> Date: Tue Jan 24 11:57:58 2017 +0000 dma/fence: Export enable-signaling tracepoint for emission by drivers Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
2017-01-27x86/gpu: GLK uses the same GMS values as SKLPaulo Zanoni
So don't forget to reserve its stolen memory bits. Cc: Ingo Molnar <mingo@kernel.org> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com> Cc: x86@kernel.org Reviewed-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com> Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com> Acked-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1485283642-14401-1-git-send-email-paulo.r.zanoni@intel.com
2017-01-27Merge branch 'master' of ↵Dave Airlie
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux into drm-next Backmerge Linus master to get the connector locking revert. * 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux: (645 commits) sysctl: fix proc_doulongvec_ms_jiffies_minmax() Revert "drm/probe-helpers: Drop locking from poll_enable" MAINTAINERS: add Dan Streetman to zbud maintainers MAINTAINERS: add Dan Streetman to zswap maintainers mm: do not export ioremap_page_range symbol for external module mn10300: fix build error of missing fpu_save() romfs: use different way to generate fsid for BLOCK or MTD frv: add missing atomic64 operations mm, page_alloc: fix premature OOM when racing with cpuset mems update mm, page_alloc: move cpuset seqcount checking to slowpath mm, page_alloc: fix fast-path race with cpuset update or removal mm, page_alloc: fix check for NULL preferred_zone kernel/panic.c: add missing \n fbdev: color map copying bounds checking frv: add atomic64_add_unless() mm/mempolicy.c: do not put mempolicy before using its nodemask radix-tree: fix private list warnings Documentation/filesystems/proc.txt: add VmPin mm, memcg: do not retry precharge charges proc: add a schedule point in proc_pid_readdir() ...
2017-01-24mn10300: fix build error of missing fpu_save()Randy Dunlap
When CONFIG_FPU is not enabled on arch/mn10300, <asm/switch_to.h> causes a build error with a call to fpu_save(): kernel/built-in.o: In function `.L410': core.c:(.sched.text+0x28a): undefined reference to `fpu_save' Fix this by including <asm/fpu.h> in <asm/switch_to.h> so that an empty static inline fpu_save() is defined. Link: http://lkml.kernel.org/r/dc421c4f-4842-4429-1b99-92865c2f24b6@infradead.org Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Reported-by: kbuild test robot <fengguang.wu@intel.com> Reviewed-by: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-01-24frv: add missing atomic64 operationsSudip Mukherjee
Some more atomic64 operations were missing and as a result frv allmodconfig was failing. Add the missing operations. Link: http://lkml.kernel.org/r/1485193844-12850-1-git-send-email-sudip.mukherjee@codethink.co.uk Signed-off-by: Sudip Mukherjee <sudip.mukherjee@codethink.co.uk> Cc: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-01-24frv: add atomic64_add_unless()Sudip Mukherjee
The build of frv allmodconfig was failing with the error: lib/atomic64_test.c:209:9: error: implicit declaration of function 'atomic64_add_unless' All the atomic64 operations were defined in frv, but atomic64_add_unless() was not done. Implement atomic64_add_unless() as done in other arches. Link: http://lkml.kernel.org/r/1484781236-6698-1-git-send-email-sudipm.mukherjee@gmail.com Signed-off-by: Sudip Mukherjee <sudip.mukherjee@codethink.co.uk> Cc: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-01-23Merge branch 'stable' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile Pull tile bugfix from Chris Metcalf: "This avoids an issue with short userspace reads for regset via ptrace" * 'stable' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile: tile/ptrace: Preserve previous registers for short regset write
2017-01-22Merge branch 'x86-urgent-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 fix from Thomas Gleixner: "Restore the retrigger callbacks in the IO APIC irq chips. That addresses a long standing regression which got introduced with the rewrite of the x86 irq subsystem two years ago and went unnoticed so far" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/ioapic: Restore IO-APIC irq_chip retrigger callback
2017-01-21Merge tag 'arc-4.10-rc5' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc Pull ARC fixes from Vineet Gupta: - more intc updates [Yuriv] - fix module build when unwinder is turned off - IO Coherency Programming model updates - other miscellaneous * tag 'arc-4.10-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc: ARC: Revert "ARC: mm: IOC: Don't enable IOC by default" ARC: mm: split arc_cache_init to allow __init reaping of bulk ARCv2: IOC: Use actual memory size to setup aperture size ARCv2: IOC: Adhere to progamming model guidelines to avoid DMA corruption ARCv2: IOC: refactor the IOC and SLC operations into own functions ARC: module: Fix !CONFIG_ARC_DW2_UNWIND builds ARCv2: save r30 on kernel entry as gcc uses it for code-gen ARCv2: IRQ: Call entry/exit functions for chained handlers in MCIP ARC: IRQ: Use hwirq instead of virq in mask/unmask ARC: mmu: clarify the MMUv3 programming model
2017-01-21Merge tag 'powerpc-4.10-2' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc fixes from Michael Ellerman: "Two fixes for fallout from the hugetlb changes we merged this cycle. Ten other fixes, four only affect Power9, and the rest are a bit of a mixture though nothing terrible. Thanks to: Aneesh Kumar K.V, Anton Blanchard, Benjamin Herrenschmidt, Dave Martin, Gavin Shan, Madhavan Srinivasan, Nicholas Piggin, Reza Arbab" * tag 'powerpc-4.10-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: powerpc: Ignore reserved field in DCSR and PVR reads and writes powerpc/ptrace: Preserve previous TM fprs/vsrs on short regset write powerpc/ptrace: Preserve previous fprs/vsrs on short regset write powerpc/perf: Use MSR to report privilege level on P9 DD1 selftest/powerpc: Wrong PMC initialized in pmc56_overflow test powerpc/eeh: Enable IO path on permanent error powerpc/perf: Fix PM_BRU_CMPL event code for power9 powerpc/mm: Fix little-endian 4K hugetlb powerpc/mm/hugetlb: Don't panic when we don't find the default huge page size powerpc: Fix pgtable pmd cache init powerpc/icp-opal: Fix missing KVM case and harden replay powerpc/mm: Fix memory hotplug BUG() on radix
2017-01-20Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds
Pull KVM fixes from Radim Krčmář: "ARM: - Fix for timer setup on VHE machines - Drop spurious warning when the timer races against the vcpu running again - Prevent a vgic deadlock when the initialization fails (for stable) s390: - Fix a kernel memory exposure (for stable) x86: - Fix exception injection when hypercall instruction cannot be patched" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM: s390: do not expose random data via facility bitmap KVM: x86: fix fixing of hypercalls KVM: arm/arm64: vgic: Fix deadlock on error handling KVM: arm64: Access CNTHCTL_EL2 bit fields correctly on VHE systems KVM: arm/arm64: Fix occasional warning from the timer work function
2017-01-20Merge tag 'arm64-fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux Pull arm64 fixes from Catalin Marinas: - avoid potential stack information leak via the ptrace ABI caused by uninitialised variables - SWIOTLB DMA API fall-back allocation fix when the SWIOTLB buffer is not initialised (all RAM is suitable for 32-bit DMA masks) - fix the bad_mode function returning for unhandled exceptions coming from user space - fix name clash in __page_to_voff() * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: arm64: avoid returning from bad_mode arm64/ptrace: Reject attempts to set incomplete hardware breakpoint fields arm64/ptrace: Avoid uninitialised struct padding in fpr_set() arm64/ptrace: Preserve previous registers for short regset write arm64/ptrace: Preserve previous registers for short regset write arm64/ptrace: Preserve previous registers for short regset write arm64: mm: avoid name clash in __page_to_voff() arm64: Fix swiotlb fallback allocation
2017-01-20Merge tag 'kvm-s390-master-4.10-1' of ↵Radim Krčmář
git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux KVM: s390: Fix for 4.10 (via kvm/master) Fix a kernel memory exposure.
2017-01-20KVM: s390: do not expose random data via facility bitmapChristian Borntraeger
kvm_s390_get_machine() populates the facility bitmap by copying bytes from the host results that are stored in a 256 byte array in the prefix page. The KVM code does use the size of the target buffer (2k), thus copying and exposing unrelated kernel memory (mostly machine check related logout data). Let's use the size of the source buffer instead. This is ok, as the target buffer will always be greater or equal than the source buffer as the KVM internal buffers (and thus S390_ARCH_FAC_LIST_SIZE_BYTE) cover the maximum possible size that is allowed by STFLE, which is 256 doublewords. All structures are zero allocated so we can leave bytes 256-2047 unchanged. Add a similar fix for kvm_arch_init_vm(). Reported-by: Heiko Carstens <heiko.carstens@de.ibm.com> [found with smatch] Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> CC: stable@vger.kernel.org Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com>
2017-01-20powerpc: Ignore reserved field in DCSR and PVR reads and writesAnton Blanchard
IBM bit 31 (for the rest of us - bit 0) is a reserved field in the instruction definition of mtspr and mfspr. Hardware is encouraged to (and does) ignore it. As a result, if userspace executes an mtspr DSCR with the reserved bit set, we get a DSCR facility unavailable exception. The kernel fails to match against the expected value/mask, and we silently return to userspace to try and re-execute the same mtspr DSCR instruction. We loop forever until the process is killed. We should do something here, and it seems mirroring what hardware does is the better option vs killing the process. While here, relax the matching of mfspr PVR too. Cc: stable@vger.kernel.org Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2017-01-20powerpc/ptrace: Preserve previous TM fprs/vsrs on short regset writeDave Martin
Ensure that if userspace supplies insufficient data to PTRACE_SETREGSET to fill all the check pointed registers, the thread's old check pointed registers are preserved. Fixes: 9d3918f7c0e5 ("powerpc/ptrace: Enable support for NT_PPC_CVSX") Fixes: 19cbcbf75a0c ("powerpc/ptrace: Enable support for NT_PPC_CFPR") Cc: stable@vger.kernel.org # v4.8+ Signed-off-by: Dave Martin <Dave.Martin@arm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2017-01-20powerpc/ptrace: Preserve previous fprs/vsrs on short regset writeDave Martin
Ensure that if userspace supplies insufficient data to PTRACE_SETREGSET to fill all the registers, the thread's old registers are preserved. Fixes: c6e6771b87d4 ("powerpc: Introduce VSX thread_struct and CONFIG_VSX") Cc: stable@vger.kernel.org # v2.6.27+ Signed-off-by: Dave Martin <Dave.Martin@arm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2017-01-19Merge tag 'armsoc-fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC fixes from Olof Johansson: "We've been sitting on fixes for a while, and they keep trickling in at a low rate. Nothing in here comes across as particularly scary or noteworthy, for the most part it's a large collection of small DT tweaks" * tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (24 commits) ARM: dts: da850-evm: fix read access to SPI flash ARM: dts: omap3: Fix Card Detect and Write Protect on Logic PD SOM-LV ARM64: dts: meson-gxbb-odroidc2: Disable SCPI DVFS ARM: dts: OMAP5 / DRA7: indicate that SATA port 0 is available. ARM: dts: NSP: Fix DT ranges error ARM: multi_v7_defconfig: set bcm47xx watchdog ARM: multi_v7_defconfig: fix config typo ARM: dts: dra72-evm-revc: fix typo in ethernet-phy node soc: ti: wkup_m3_ipc: Fix error return code in wkup_m3_ipc_probe() ARM: ux500: fix prcmu_is_cpu_in_wfi() calculation ARM: dts: sunxi: Change node name for pwrseq pin on Olinuxino-lime2-emmc ARM: dts: sun8i: Support DTB build for NanoPi M1 ARM: dts: sun6i: hummingbird: Enable display engine again ARM: dts: sun6i: Disable display pipeline by default ARM, ARM64: dts: drop "arm,amba-bus" in favor of "simple-bus" part 3 ARM: dts: imx6qdl-nitrogen6_som2: fix sgtl5000 pinctrl init ARM: dts: imx6qdl-nitrogen6_max: fix sgtl5000 pinctrl init ARM: OMAP1: DMA: Correct the number of logical channels ARM: dts: am335x-icev2: Remove the duplicated pinmux setting ARM: OMAP2+: Fix WL1283 Bluetooth Baud Rate ...
2017-01-19ARM: dts: da850-evm: fix read access to SPI flashFabien Parent
Read access to the SPI flash are broken on da850-evm, i.e. the data read is not what is actually programmed on the flash. According to the datasheet for the M25P64 part present on the da850-evm, if the SPI frequency is higher than 20MHz then the READ command is not usable anymore and only the FAST_READ command can be used to read data. This commit specifies in the DTS that we should use FAST_READ command instead of the READ command. Cc: stable@vger.kernel.org Tested-by: Kevin Hilman <khilman@baylibre.com> Signed-off-by: Fabien Parent <fparent@baylibre.com> [nsekhar@ti.com: subject line adjustment] Signed-off-by: Sekhar Nori <nsekhar@ti.com> Signed-off-by: Olof Johansson <olof@lixom.net>
2017-01-19Merge tag 'pci-v4.10-fixes-1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci Pull PCI fixes from Bjorn Helgaas: - recognize that a PCI-to-PCIe bridge originates a PCIe hierarchy, so we enumerate that hierarchy correctly - X-Gene: fix a change merged for v4.10 that broke MSI - Keystone: avoid reading undefined registers, which can cause asynchronous external aborts - Supermicro X8DTH-i/6/iF/6F: ignore broken _CRS that caused us to change (and break) existing I/O port assignments * tag 'pci-v4.10-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: PCI/MSI: pci-xgene-msi: Fix CPU hotplug registration handling PCI: Enumerate switches below PCI-to-PCIe bridges x86/PCI: Ignore _CRS on Supermicro X8DTH-i/6/iF/6F PCI: designware: Check for iATU unroll only on platforms that use ATU
2017-01-19Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull two s390 bug fixes from Martin Schwidefsky: "Two changes, the first is a fix to add a missing memory clobber to the inline assembly to load control registers. This has not caused any issues so far, but who knows what code gcc will generate in future versions. The second change is an update for the default configurations. This includes CONFIG_BUG_ON_DATA_CORRUPTION=y, we want this to be enabled for s390. The usual approach to debug problems on production systems is to use crash on a system dump and for us avoiding data corruptions is priority one" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: s390: update defconfigs s390/ctl_reg: make __ctl_load a full memory barrier
2017-01-19arm64: avoid returning from bad_modeMark Rutland
Generally, taking an unexpected exception should be a fatal event, and bad_mode is intended to cater for this. However, it should be possible to contain unexpected synchronous exceptions from EL0 without bringing the kernel down, by sending a SIGILL to the task. We tried to apply this approach in commit 9955ac47f4ba1c95 ("arm64: don't kill the kernel on a bad esr from el0"), by sending a signal for any bad_mode call resulting from an EL0 exception. However, this also applies to other unexpected exceptions, such as SError and FIQ. The entry paths for these exceptions branch to bad_mode without configuring the link register, and have no kernel_exit. Thus, if we take one of these exceptions from EL0, bad_mode will eventually return to the original user link register value. This patch fixes this by introducing a new bad_el0_sync handler to cater for the recoverable case, and restoring bad_mode to its original state, whereby it calls panic() and never returns. The recoverable case branches to bad_el0_sync with a bl, and returns to userspace via the usual ret_to_user mechanism. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Fixes: 9955ac47f4ba1c95 ("arm64: don't kill the kernel on a bad esr from el0") Reported-by: Mark Salter <msalter@redhat.com> Cc: Will Deacon <will.deacon@arm.com> Cc: stable@vger.kernel.org Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2017-01-18ARC: Revert "ARC: mm: IOC: Don't enable IOC by default"Vineet Gupta
The programming model has been fixed with prev patches so re-enable it by default This reverts commit 23cb1f644019bac49d87b4dd7c1eac0569cc4f53. Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2017-01-18ARC: mm: split arc_cache_init to allow __init reaping of bulkVineet Gupta
arc_cache_init() is called for each core so can't be tagged __init. However bulk of it is only executed by master core and thus is candidate for __init reaping. So split it up to allow that. Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2017-01-18Merge tag 'omap-for-v4.10/fixes-rc4' of ↵Olof Johansson
git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes Fixes for omaps for v4.10-rc cycle. Mostly a DMA regression fix for omap1, and then a handful of trivial fixes for boards and devices to work: - Fixes TI wilink bluetooth strange platform data baud rate - Remove duplicate pinmux line for am335x-icev2 - Fix omap1 dma regression - Fix uninitialized return value for wkup_m3_ipc_probe() - Fix Ethernet PHY binding typo for dra72-evm - Fix init for omap5 and dra7 sata ports - Fix mmc card detect pin for Logic PD SOM-LV * tag 'omap-for-v4.10/fixes-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap: ARM: dts: omap3: Fix Card Detect and Write Protect on Logic PD SOM-LV ARM: dts: OMAP5 / DRA7: indicate that SATA port 0 is available. ARM: dts: dra72-evm-revc: fix typo in ethernet-phy node soc: ti: wkup_m3_ipc: Fix error return code in wkup_m3_ipc_probe() ARM: OMAP1: DMA: Correct the number of logical channels ARM: dts: am335x-icev2: Remove the duplicated pinmux setting ARM: OMAP2+: Fix WL1283 Bluetooth Baud Rate Signed-off-by: Olof Johansson <olof@lixom.net>
2017-01-18ARCv2: IOC: Use actual memory size to setup aperture sizeVineet Gupta
vs. fixed 512M before. But this still assumes that all of memory is under IOC which may not be true for the SoC. Improve that later when this becomes a real issue, by specifying this from DT. Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2017-01-18ARCv2: IOC: Adhere to progamming model guidelines to avoid DMA corruptionVineet Gupta
On AXS103 release bitfiles, DMA data corruptions were seen because IOC setup was not following the recommended way in documentation. Flipping IOC on when caches are enabled or coherency transactions are in flight, might cause some of the memory operations to not observe coherency as expected. So strictly follow the programming model recommendations as documented in comment header above arc_ioc_setup() Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2017-01-18ARCv2: IOC: refactor the IOC and SLC operations into own functionsVineet Gupta
- Move IOC setup into arc_ioc_setup() - Move SLC disabling into arc_slc_disable() Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2017-01-18Merge branch 'fixes' of git://git.armlinux.org.uk/~rmk/linux-armLinus Torvalds
Pull ARM fixes from Russell King: "A few ARM fixes: - fix a crash while performing TLB maintanence on early ARM SMP cores - blacklist Scorpion CPUs for hardware breakpoints - ARMs asm/types.h has been included as part of the UAPI due to the way the makefiles work, move it to uapi/asm/types.h to make it official - fix up ftrace syscall name matching" * 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm: ARM: 8613/1: Fix the uaccess crash on PB11MPCore MAINTAINERS: update rmk's entries ARM: put types.h in uapi ARM: 8634/1: hw_breakpoint: blacklist Scorpion CPUs ARM: 8632/1: ftrace: fix syscall name matching
2017-01-18ARC: module: Fix !CONFIG_ARC_DW2_UNWIND buildsVineet Gupta
commit d65283f7b695b5 added mod->arch.secstr under CONFIG_ARC_DW2_UNWIND, but used it unconditionally which broke builds when the option was disabled. Fix that by adjusting the #ifdef guard. And while at it add a missing guard (for unwinder) in module.c as well Reported-by: Waldemar Brodkorb <wbx@openadk.org> Cc: stable@vger.kernel.org #4.9 Fixes: d65283f7b695b5 ("ARC: module: elide loop to save reference to .eh_frame") Tested-by: Anton Kolesov <akolesov@synopsys.com> Reviewed-by: Alexey Brodkin <abrodkin@synopsys.com> [abrodkin: provided fixlet to Kconfig per failure in allnoconfig build] Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2017-01-18Merge branch 'smp-urgent-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull SMP hotplug update from Thomas Gleixner: "This contains a trivial typo fix and an extension to the core code for dynamically allocating states in the prepare stage. The extension is necessary right now because we need a proper way to unbreak LTTNG, which iscurrently non functional due to the removal of the notifiers. Surely it's out of tree, but it's widely used by distros. The simple solution would have been to reserve a state for LTTNG, but I'm not fond about unused crap in the kernel and the dynamic range, which we admittedly should have done right away, allows us to remove quite some of the hardcoded states, i.e. those which have no ordering requirements. So doing the right thing now is better than having an smaller intermediate solution which needs to be reworked anyway" * 'smp-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: cpu/hotplug: Provide dynamic range for prepare stage perf/x86/amd/ibs: Fix typo after cleanup state names in cpu/hotplug
2017-01-18arm64/ptrace: Reject attempts to set incomplete hardware breakpoint fieldsDave Martin
We cannot preserve partial fields for hardware breakpoints, because the values written by userspace to the hardware breakpoint registers can't subsequently be recovered intact from the hardware. So, just reject attempts to write incomplete fields with -EINVAL. Cc: <stable@vger.kernel.org> # 3.7.x- Fixes: 478fcb2cdb23 ("arm64: Debugging support") Signed-off-by: Dave Martin <Dave.Martin@arm.com> Acked-by: Will Deacon <Will.Deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2017-01-18arm64/ptrace: Avoid uninitialised struct padding in fpr_set()Dave Martin
This patch adds an explicit __reserved[] field to user_fpsimd_state to replace what was previously unnamed padding. This ensures that data in this region are propagated across assignment rather than being left possibly uninitialised at the destination. Cc: <stable@vger.kernel.org> # 3.7.x- Fixes: 60ffc30d5652 ("arm64: Exception handling") Signed-off-by: Dave Martin <Dave.Martin@arm.com> Acked-by: Will Deacon <Will.Deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2017-01-18arm64/ptrace: Preserve previous registers for short regset writeDave Martin
Ensure that if userspace supplies insufficient data to PTRACE_SETREGSET to fill all the registers, the thread's old registers are preserved. Cc: <stable@vger.kernel.org> # 4.3.x- Fixes: 5d220ff9420f ("arm64: Better native ptrace support for compat tasks") Signed-off-by: Dave Martin <Dave.Martin@arm.com> Acked-by: Will Deacon <Will.Deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2017-01-18arm64/ptrace: Preserve previous registers for short regset writeDave Martin
Ensure that if userspace supplies insufficient data to PTRACE_SETREGSET to fill all the registers, the thread's old registers are preserved. Cc: <stable@vger.kernel.org> # 3.19.x- Fixes: 766a85d7bc5d ("arm64: ptrace: add NT_ARM_SYSTEM_CALL regset") Signed-off-by: Dave Martin <Dave.Martin@arm.com> Acked-by: Will Deacon <Will.Deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2017-01-18arm64/ptrace: Preserve previous registers for short regset writeDave Martin
Ensure that if userspace supplies insufficient data to PTRACE_SETREGSET to fill all the registers, the thread's old registers are preserved. Cc: <stable@vger.kernel.org> # 3.7.x- Fixes: 478fcb2cdb23 ("arm64: Debugging support") Signed-off-by: Dave Martin <Dave.Martin@arm.com> Acked-by: Will Deacon <Will.Deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2017-01-18x86/ioapic: Restore IO-APIC irq_chip retrigger callbackRuslan Ruslichenko
commit d32932d02e18 removed the irq_retrigger callback from the IO-APIC chip and did not add it to the new IO-APIC-IR irq chip. Unfortunately the software resend fallback is not enabled on X86, so edge interrupts which are received during the lazy disabled state of the interrupt line are not retriggered and therefor lost. Restore the callbacks. [ tglx: Massaged changelog ] Fixes: d32932d02e18 ("x86/irq: Convert IOAPIC to use hierarchical irqdomain interfaces") Signed-off-by: Ruslan Ruslichenko <rruslich@cisco.com> Cc: xe-linux-external@cisco.com Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/1484662432-13580-1-git-send-email-rruslich@cisco.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2017-01-18arm64: mm: avoid name clash in __page_to_voff()Oleksandr Andrushchenko
The arm64 __page_to_voff() macro takes a parameter called 'page', and also refers to 'struct page'. Thus, if the value passed in is not called 'page', we'll refer to the wrong struct name (which might not exist). Fixes: 3fa72fe9c614 ("arm64: mm: fix __page_to_voff definition") Acked-by: Mark Rutland <mark.rutland@arm.com> Suggested-by: Volodymyr Babchuk <Volodymyr_Babchuk@epam.com> Signed-off-by: Oleksandr Andrushchenko <Oleksandr_Andrushchenko@epam.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2017-01-18powerpc/perf: Use MSR to report privilege level on P9 DD1Madhavan Srinivasan
SIER and SIAR are not updated correctly for some samples, so force the use of MSR and regs->nip instead for misc_flag updates. This is done by adding a new ppmu flag and updating the use_siar logic in perf_read_regs() to use it, and dropping the PPMU_HAS_SIER flag. Signed-off-by: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> [mpe: Rename flag to PPMU_NO_SIAR, and also drop PPMU_HAS_SIER] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2017-01-18powerpc/eeh: Enable IO path on permanent errorGavin Shan
We give up recovery on permanent error, simply shutdown the affected devices and remove them. If the devices can't be put into quiet state, they spew more traffic that is likely to cause another unexpected EEH error. This was observed on "p8dtu2u" machine: 0002:00:00.0 PCI bridge: IBM Device 03dc 0002:01:00.0 Ethernet controller: Intel Corporation \ Ethernet Controller X710/X557-AT 10GBASE-T (rev 02) 0002:01:00.1 Ethernet controller: Intel Corporation \ Ethernet Controller X710/X557-AT 10GBASE-T (rev 02) 0002:01:00.2 Ethernet controller: Intel Corporation \ Ethernet Controller X710/X557-AT 10GBASE-T (rev 02) 0002:01:00.3 Ethernet controller: Intel Corporation \ Ethernet Controller X710/X557-AT 10GBASE-T (rev 02) On P8 PowerNV platform, the IO path is frozen when shutdowning the devices, meaning the memory registers are inaccessible. It is why the devices can't be put into quiet state before removing them. This fixes the issue by enabling IO path prior to putting the devices into quiet state. Reported-by: Pridhiviraj Paidipeddi <ppaidipe@linux.vnet.ibm.com> Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com> Acked-by: Russell Currey <ruscur@russell.cc> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2017-01-18powerpc/perf: Fix PM_BRU_CMPL event code for power9Madhavan Srinivasan
Use 0x10012 event code for PM_BRU_CMPL event in power9 event list instead of current 0x40060. Fixes: 34922527a2bcb ('powerpc/perf: Add power9 event list macros for generic and cache events') Cc: stable@vger.kernel.org # v4.9+ Signed-off-by: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2017-01-18powerpc/mm: Fix little-endian 4K hugetlbAneesh Kumar K.V
When we switched to big endian page table, we never updated the hugepd format such that it can work for both big endian and little endian config. This patch series update hugepd format such that it is looked at as __be64 value in big endian page table config. This patch also switch hugepd_t.pd from signed long to unsigned long. I did update the FSL hugepd_ok check to check for the top bit instead of checking > 0. Fixes: 5dc1ef858c12 ("powerpc/mm: Use big endian Linux page tables for book3s 64") Cc: stable@vger.kernel.org # v4.7+ Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2017-01-18powerpc/mm/hugetlb: Don't panic when we don't find the default huge page sizeAneesh Kumar K.V
The generic hugetlbfs code can handle not finding the default huge page size correctly. With HPAGE_SHIFT = 0 we see in dmesg: hugetlbfs: disabling because there are no supported hugepage sizes bash-4.2# echo 30 > /proc/sys/vm/nr_hugepages bash: echo: write error: Operation not supported Fixes: 03bb2d65900c ("powerpc: get hugetlbpage handling more generic") Reported-by: Chris Smart <chris@distroguy.com> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Acked-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2017-01-18powerpc: Fix pgtable pmd cache initNicholas Piggin
Commit 9b081e10805cd ("powerpc: port 64 bits pgtable_cache to 32 bits") mixed up PMD_INDEX_SIZE and PMD_CACHE_INDEX a couple of times. This resulted in 64s/hash/4k configs to panic at boot with a false positive error check. Fix that and simplify error handling by moving the check to the caller. Fixes: 9b081e10805cd ("powerpc: port 64 bits pgtable_cache to 32 bits") Signed-off-by: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2017-01-17ARM: dts: omap3: Fix Card Detect and Write Protect on Logic PD SOM-LVAdam Ford
This fixes commit ab8dd3aed011 ("ARM: DTS: Add minimal Support for Logic PD DM3730 SOM-LV") where the Card Detect and Write Protect pins were improperly configured. Fixes: ab8dd3aed011 ("ARM: DTS: Add minimal Support for Logic PD DM3730 SOM-LV") Signed-off-by: Adam Ford <aford173@gmail.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2017-01-17ARM64: dts: meson-gxbb-odroidc2: Disable SCPI DVFSNeil Armstrong
The current hardware is not able to run with all cores enabled at a cluster frequency superior at 1536MHz. But the currently shipped u-boot for the platform still reports an OPP table with possible DVFS frequency up to 2GHz, and will not change since the off-tree linux tree supports limiting the OPPs with a kernel parameter. A recent u-boot change reports the boot-time DVFS around 100MHz and the default performance cpufreq governor sets the maximum frequency. Previous version of u-boot reported to be already at the max OPP and left the OPP as is. Nevertheless, other governors like ondemand could setup the max frequency and make the system crash. This patch disables the DVFS clock and disables cpufreq. Fixes: 70db166a2baa ("ARM64: dts: meson-gxbb: Add SCPI with cpufreq & sensors Nodes") Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Signed-off-by: Kevin Hilman <khilman@baylibre.com> Signed-off-by: Olof Johansson <olof@lixom.net>
2017-01-17KVM: x86: fix fixing of hypercallsDmitry Vyukov
emulator_fix_hypercall() replaces hypercall with vmcall instruction, but it does not handle GP exception properly when writes the new instruction. It can return X86EMUL_PROPAGATE_FAULT without setting exception information. This leads to incorrect emulation and triggers WARN_ON(ctxt->exception.vector > 0x1f) in x86_emulate_insn() as discovered by syzkaller fuzzer: WARNING: CPU: 2 PID: 18646 at arch/x86/kvm/emulate.c:5558 Call Trace: warn_slowpath_null+0x2c/0x40 kernel/panic.c:582 x86_emulate_insn+0x16a5/0x4090 arch/x86/kvm/emulate.c:5572 x86_emulate_instruction+0x403/0x1cc0 arch/x86/kvm/x86.c:5618 emulate_instruction arch/x86/include/asm/kvm_host.h:1127 [inline] handle_exception+0x594/0xfd0 arch/x86/kvm/vmx.c:5762 vmx_handle_exit+0x2b7/0x38b0 arch/x86/kvm/vmx.c:8625 vcpu_enter_guest arch/x86/kvm/x86.c:6888 [inline] vcpu_run arch/x86/kvm/x86.c:6947 [inline] Set exception information when write in emulator_fix_hypercall() fails. Signed-off-by: Dmitry Vyukov <dvyukov@google.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Radim Krčmář <rkrcmar@redhat.com> Cc: Wanpeng Li <wanpeng.li@hotmail.com> Cc: kvm@vger.kernel.org Cc: syzkaller@googlegroups.com Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
2017-01-17Merge tag 'kvm-arm-for-4.10-rc4' of ↵Radim Krčmář
git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm KVM/ARM updates for 4.10-rc4 - Fix for timer setup on VHE machines - Drop spurious warning when the timer races against the vcpu running again - Prevent a vgic deadlock when the initialization fails
2017-01-17arm64: Fix swiotlb fallback allocationAlexander Graf
Commit b67a8b29df introduced logic to skip swiotlb allocation when all memory is DMA accessible anyway. While this is a great idea, __dma_alloc still calls swiotlb code unconditionally to allocate memory when there is no CMA memory available. The swiotlb code is called to ensure that we at least try get_free_pages(). Without initialization, swiotlb allocation code tries to access io_tlb_list which is NULL. That results in a stack trace like this: Unable to handle kernel NULL pointer dereference at virtual address 00000000 [...] [<ffff00000845b908>] swiotlb_tbl_map_single+0xd0/0x2b0 [<ffff00000845be94>] swiotlb_alloc_coherent+0x10c/0x198 [<ffff000008099dc0>] __dma_alloc+0x68/0x1a8 [<ffff000000a1b410>] drm_gem_cma_create+0x98/0x108 [drm] [<ffff000000abcaac>] drm_fbdev_cma_create_with_funcs+0xbc/0x368 [drm_kms_helper] [<ffff000000abcd84>] drm_fbdev_cma_create+0x2c/0x40 [drm_kms_helper] [<ffff000000abc040>] drm_fb_helper_initial_config+0x238/0x410 [drm_kms_helper] [<ffff000000abce88>] drm_fbdev_cma_init_with_funcs+0x98/0x160 [drm_kms_helper] [<ffff000000abcf90>] drm_fbdev_cma_init+0x40/0x58 [drm_kms_helper] [<ffff000000b47980>] vc4_kms_load+0x90/0xf0 [vc4] [<ffff000000b46a94>] vc4_drm_bind+0xec/0x168 [vc4] [...] Thankfully swiotlb code just learned how to not do allocations with the FORCE_NO option. This patch configures the swiotlb code to use that if we decide not to initialize the swiotlb framework. Fixes: b67a8b29df ("arm64: mm: only initialize swiotlb when necessary") Signed-off-by: Alexander Graf <agraf@suse.de> CC: Jisheng Zhang <jszhang@marvell.com> CC: Geert Uytterhoeven <geert+renesas@glider.be> CC: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2017-01-17perf/x86/intel: Handle exclusive threadid correctly on CPU hotplugZhou Chengming
The CPU hotplug function intel_pmu_cpu_starting() sets cpu_hw_events.excl_thread_id unconditionally to 1 when the shared exclusive counters data structure is already availabe for the sibling thread. This works during the boot process because the first sibling gets threadid 0 assigned and the second sibling which shares the data structure gets 1. But when the first thread of the core is offlined and onlined again it shares the data structure with the second thread and gets exclusive thread id 1 assigned as well. Prevent this by checking the threadid of the already online thread. [ tglx: Rewrote changelog ] Signed-off-by: Zhou Chengming <zhouchengming1@huawei.com> Cc: NuoHan Qiao <qiaonuohan@huawei.com> Cc: ak@linux.intel.com Cc: peterz@infradead.org Cc: kan.liang@intel.com Cc: dave.hansen@linux.intel.com Cc: eranian@google.com Cc: qiaonuohan@huawei.com Cc: davidcc@google.com Cc: guohanjun@huawei.com Link: http://lkml.kernel.org/r/1484536871-3131-1-git-send-email-zhouchengming1@huawei.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de> --- --- arch/x86/events/intel/core.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-14 19:20:11 +0000